Reversing-valve.



f Patented 001.9 |900. No. 659,22l. S mmm REVERSING VALVE.

(Appxmacion med July 2a. 1899.)

(Ho Model.) 2 Sheets-Sheet 2.

Fi UHIII f dnl f INVENTOR NiTnD STATES" -ATENT EFICE.,

SAMUEL FORTER, OF PI'ITSBURG, PENNSYLVANIA.

REvERslNc-VALVE.

SPECIFICATION forming part of Letters Patent No. 659,221, dated October 9, 1900.

Application tiled July 29,1899.

To @ZZ whom t may concern:

Be it known that I, SAMUEL FORTER, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Reversing- Valves, of which the following isa full, clear,

and exact description, reference being had tothe accompanying drawings, forming part of this specification, in which- Figure 1 is avertical longitudinal section of my improved valve, showing the same in different positions. Fig. 2 is a vertical crosssection on the line II II of Fig. 1, and Figs. 3 and 4- are detail views of movable closure portions of the valve.

My invention relates to the class of shifting liquid-sealed valves which are employed as reversing-valves in connection with regenerative furnaces and similar heating-furnaces, and is designed to provide a valve of this character which may be moved laterally without lifting and will be liquid-sealed in its different positions. It is further designed to provide a valve of this character in which the valve and casing shall be liquid-sealed both in the .upper and lower portions, thus preventing escape of gases.

In the drawings, 2 represents a bed plate casting, having a rim 3 and provided with a port 4, leading to the stack, and ports 5 and 6,v

through which the gases pass to and from the furnace alternately. These ports are provided with upwardlyprojecting [langes 7, which extend to a point above the level of the liquid contained Within the bed plate, the ports 5 and 6 having inclined ribs 8, leading from below the water-level to the upper edges of the iianges.

The valve proper, 9,consists of a curved partition-plate, having its ends secured to a horizontally-niovin g casing 10, the partition-plate preferably being cast integral with the casing. The casing is provided at each side with vertical slots 11, forming suitable guides for the ends of vertically-sliding closure-plates 12, having ribs 13, which rest upon the side edge portion of the valve when these plates are in their lowest position. The closure-plates 12 12 thus constitute the lower edges of the valve 9 and make the connection between the same and the liquid seal. Thin plates 14 are secured to the casing over the slots and project Serial No.- 725A42. LNG model.)

down below the waterlevel, the plates 12 being a little shorter than the distance between the plates 14, so as to allow for easy operation of the closures. 'lhe upper part of the casing is provided with a continuous upright flange 15, inclosing its top and arranged to contain a pool of water, through which the flanged portion 16 projects upwardly into the interior of the depending bell17. The edges of this bell are below the level of the water held on the top of the casing, thus water-sealing the port 16. The open top of the bell is provided with the seat l5 for the usual mushroom valve 19, which is moved vertically within the case 20 by the usual valve-rod 21.

The casing 10 is provided with the usual cleaning-doors 22, and the sides of the bedplate are provided with the verticalstandards 23, upon which is supported the bell 17. The' casing is carried upon rollers 24, mounted o n shortsbafts projecting from its sides and movable upon the longitudinal portion of the rim 3. The casing and the valve may be reciprocated horizontally by link connections 25 with the hand-lever 26, pivoted to the bedplate.

27 is a brace for the casing; 28, an overflowpipe; 29 29, the perforated plate to keep tar from getting into the overflow-pipe, and 30a movable plate to regulate depth of water in the seal according to the vertical adjustment of plate 30.

The operation of the device is apparent. When the parts are in the position shown in the full lines in Fig. 1, gas entering through the port 18 passes through the port 5 to the furnace, while the gases from the furnace pass out through ports 6 and 4 to the stack. When it is desired to reverse, the casing is moved horizontally to the position shown in l dotted lines. During this movement the closures 12 will ride up the inclined ribs and over the ports 5 and 6, and thence passing down the inclined ribs on the other side will drop by gravity into sealing position.

The advantages ofmyinvention result from doing away with all levers or other operating mechanism within the casing where they would become heated. Lifting of the valve in its movements is rendered unnecessary, and the closures move automatically to their sealing position upon movement of the casing :ind vztlve. The casing is sealed bof-h at the top and botionnand the construction is simple and not liable Ato get out of order.

I claiml. In reversing-valves, a plate provided with vulve-ports; suitable channels around szi'id ports receiving a sealing liquid; a mov- :tble casing having its lower edge sealed by said liquid; an inlet-port in said casing and :t valve within said cu-sing moving therewith sind having its lower edge sealed by said liquid when sented.

2. In reversing-valves, a plate provided with valve ports; suitable channels monnd said ports receiving :t sealing liquid; :t horizontally-movable casing havingits lower edge sealed by seid liquid; en inlet-port in seid casing; zt vnl ve Within said casing and moving therewith l(ind verticnllymovable closureplzttes constituting the lower edges of said valve und making the connection between the saine and the sealing liquid.

In reversing-valves, a plaie provided with vulve-ports; suitable channels around said ports receiving n sealing liquid; :t horizontally-movable casing havingits lower edge sealed by said liquid; n port in the upper part of said movable casing; suitable channels in said casing around seid port to receive :t sealing liquid; :t bell supporting e valveseat and entering said sealing liquid and :t

valve-for said seat.

Ll. In reversing-Valves, a plate provided with valve-ports; suitable channels around said ports receiving :t sealing liquid; a hori- SAMUEL FOR'IER.

Witnesses:

I-I. M. CoRwIN, G. H. BLEWMING. 

